1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#include <kms++util/kms++util.h>
#include "cube.h"
#include "cube-egl.h"
#include "cube-gles2.h"
#include <X11/Xlib-xcb.h>
#include <X11/Xlibint.h>
using namespace std;
static void main_loop(Display* dpy, xcb_connection_t *c, xcb_window_t window, uint32_t width, uint32_t height)
{
EglState egl(dpy);
EglSurface surface(egl, (void*)(uintptr_t)window);
GlScene scene;
scene.set_viewport(width, height);
unsigned framenum = 0;
surface.make_current();
surface.swap_buffers();
bool need_exit = false;
xcb_generic_event_t *event;
while (true) {
while ((event = xcb_poll_for_event (c))) {
bool handled = false;
uint8_t response_type = event->response_type & ~0x80;
switch (response_type) {
case XCB_EXPOSE: {
handled = true;
break;
}
case XCB_KEY_PRESS: {
handled = true;
xcb_key_press_event_t *kp = (xcb_key_press_event_t *)event;
if (kp->detail == 24 || kp->detail == 9) {
printf("Exit due to keypress\n");
need_exit = true;
}
break;
}
}
if (!handled) {
// Check if a custom XEvent constructor was registered in xlib for this event type, and call it discarding the constructed XEvent if any.
// XESetWireToEvent might be used by libraries to intercept messages from the X server e.g. the OpenGL lib waiting for DRI2 events.
XLockDisplay(dpy);
Bool (*proc)(Display*, XEvent*, xEvent*) = XESetWireToEvent(dpy, response_type, NULL);
if (proc) {
XESetWireToEvent(dpy, response_type, proc);
XEvent dummy;
event->sequence = LastKnownRequestProcessed(dpy);
proc(dpy, &dummy, (xEvent*)event);
}
XUnlockDisplay(dpy);
}
free(event);
}
if (s_num_frames && framenum >= s_num_frames)
need_exit = true;
if (need_exit)
break;
// this should be in XCB_EXPOSE, but we don't get the event after swaps...
scene.draw(framenum++);
surface.swap_buffers();
}
}
void main_x11()
{
Display* dpy = XOpenDisplay(NULL);
FAIL_IF(!dpy, "Failed to connect to the X server");
xcb_connection_t *c = XGetXCBConnection(dpy);
/* Acquire event queue ownership */
XSetEventQueueOwner(dpy, XCBOwnsEventQueue);
/* Get the first screen */
const xcb_setup_t *setup = xcb_get_setup (c);
xcb_screen_t *screen = xcb_setup_roots_iterator (setup).data;
/* Create the window */
uint32_t width;
uint32_t height;
if (s_fullscreen) {
width = screen->width_in_pixels;
height = screen->height_in_pixels;
} else {
width = 600;
height = 600;
}
const uint32_t xcb_window_attrib_mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
const uint32_t xcb_window_attrib_list[] = {
// OVERRIDE_REDIRECT
0,
// EVENT_MASK
XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS,
};
xcb_window_t window = xcb_generate_id (c);
xcb_create_window (c, /* Connection */
XCB_COPY_FROM_PARENT, /* depth (same as root)*/
window, /* window Id */
screen->root, /* parent window */
0, 0, /* x, y */
width, height, /* width, height */
0, /* border_width */
XCB_WINDOW_CLASS_INPUT_OUTPUT, /* class */
screen->root_visual, /* visual */
xcb_window_attrib_mask,
xcb_window_attrib_list);
if (s_fullscreen)
{
const char *net_wm_state = "_NET_WM_STATE";
const char *net_wm_state_fullscreen = "_NET_WM_STATE_FULLSCREEN";
xcb_intern_atom_cookie_t cookie = xcb_intern_atom(c, 0, strlen(net_wm_state), net_wm_state);
xcb_intern_atom_reply_t* reply = xcb_intern_atom_reply(c, cookie, 0);
xcb_intern_atom_cookie_t cookie2 = xcb_intern_atom(c, 0, strlen(net_wm_state_fullscreen), net_wm_state_fullscreen);
xcb_intern_atom_reply_t* reply2 = xcb_intern_atom_reply(c, cookie2, 0);
xcb_change_property(c, XCB_PROP_MODE_REPLACE, window, reply->atom, XCB_ATOM_ATOM , 32, 1, (void*)&reply2->atom);
}
xcb_map_window (c, window);
xcb_flush (c);
main_loop(dpy, c, window, width, height);
xcb_flush(c);
xcb_unmap_window(c, window);
xcb_destroy_window(c, window);
XCloseDisplay(dpy);
}
|
